MAX1961 Просмотр технического описания (PDF) - Maxim Integrated

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MAX1961

2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining

Maxim Integrated 

2.35V to 5.5V, 0.5% Accurate, 1MHz PWM

Step-Down Controllers with Voltage Margining

ELECTRICAL CHARACTERISTICS (continued)

(VVCC = 3.3V, Circuits of Figures 9–12, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)

PARAMETER

VDD Output Voltage

Reference Voltage (No Load)

Reference Load Regulation

Positive Current-Limit Threshold

(VPGND - VLX)

Negative Current-Limit Threshold

(VLX - VPGND)

CS Bias Current

OUT Bias Current

Current-Limit Threshold (Positive

Direction, Fixed, VPGND - VLX)

Current-Limit Threshold (Negative

Direction, Fixed, VLX - VPGND)

Current-Limit Threshold (Positive

Direction, Adjustable, VPGND - VLX)

Current-Limit Threshold (Negative

Direction, Adjustable, VLX - VPGND)

Thermal-Shutdown Threshold

DH Gate-Driver On-Resistance

DL Gate-Driver On-Resistance (Pullup)

DL Gate-Driver On-Resistance (Pulldown)

Minimum Adaptive Dead Time

FSET/SYNC Pulse Width

FSET/SYNC Rise/Fall Time

CTL_, FSET/SYNC, EN Input High Voltage

CTL_, FSET/SYNC, EN Input Low Voltage

CTL_, FSET/SYNC, EN Input Current

CLKOUT VOL

CONDITIONS

2.7V ≤ VVCC ≤ 5.5V, ILOAD = 1mA to 50mA

2.35V ≤ VVCC ≤ 2.7V, ILOAD = 1mA to 35mA, C1

= 4.7µF, C6 = 22µF (Note 1)

2.35V ≤ VVCC ≤ 3.6V with tripler, ILOAD = 1 to

50mA (circuit of Figure 12) (Note 1)

-50µA to +50µA

MAX1962

VOUT = 0.8V

VOUT = 2.0V

VOUT = 3.3V

MAX1962, VOUT = 0.8V to 3.3V

MAX1962, VCS = 3.3V

MAX1961/MAX1962, VOUT = 3.3V

MAX1960/MAX1961, ILIM = VDD

MAX1960/MAX1961, ILIM = VDD

MAX1960/MAX1961, RILIM = 160kΩ

RILIM = 400kΩ

MAX1960/MAX1961, RILIM = 160kΩ

RILIM = 400kΩ

15°C hysteresis

VBST - VLX = 5V, pulling up or down

DL high state

DL low state

DH falling to DL rising

DH rising to DL falling

Minimum high time (Note 1)

Minimum low time (Note 1)

(Note 1)

VVCC = 2.35V to 5.5V

VVCC = 2.35V to 5.5V

Sinking 1mA

CLKOUT VOH

Sourcing 1mA

CLKOUT Rise/Fall Time

CLOAD = 100pF (Note 1)

MIN

4.75

4.45

4.75

1.269

44

45

38

38

58

50

100

250

90

245

200

200

2.0

-1

VVCC -

0.2V

TYP

1.280

3

53

50

48

50

20

30

74

67

114

279

107

271

+160

1.8

1.8

0.5

35

26

0.01

VVCC -

0.01V

MAX

5.25

5.25

5.25

1.291

62

55

58

68

50

50

90

85

135

306

125

296

3.5

3.5

1.6

100

0.8

+1

0.1

40

UNITS

V

V

V

V

mV

mV

mV

µA

µA

mV

mV

mV

mV

°C

Ω

Ω

Ω

ns

ns

ns

V

V

µA

V

V

ns

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